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प्रश्न
Write balanced equation for a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.
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उत्तर
\[\ce{\underset{(Yellow)}{PbO} + 2NaOH -> \underset{(Colourless, soluble)}{\underset{Sodium Plumbite}{Na2PbO2}} + H2O}\]
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संबंधित प्रश्न
_____________ (AgCl / PbCl2), a white precipitate is soluble in excess NH4OH
State your observations when Barium chloride solution is mixed with Sodium Sulphate Solution.
You are given three white powders-calcium carbonate, lead carbonate and zinc carbonate. Describe the tests you would carry out in solution, to identify the metal ion in each of the above compounds. Indicate clearly how you would prepare the solutions for the tests.
Sodium hydroxide solution can be used to distinguish between i. iron (II) sulphate solution and (ii) iron (III) sulphate solution; because these solutions give different coloured precipitates with sodium hydroxide solution. Give the colour of the precipitate formed with each of the solution.
Give the balanced equations for the reaction with two different amphoteric oxides with a caustic alkali.
Write a balanced equation for the following conversion:
\[\ce{ZnSO4 ->[A]Zn(OH)2->[B]Na2ZnO2}\]
A given white crystalline salt was tested as follows:
The addition of barium chloride solution into this solution gave a white precipitate. What conclusions can be drawn for the observation?
The questions (i) to (v) refer to the following salt solutions listed A to F.
A.Copper Nitrate
B.Iron (II) Sulphate
C.Iron (III) chloride
D.Lead Nitrate
E.Magnesium sulphate
F.Zinc chloride
(I)Which two solutions will give a white precipitate when treated with dilute hydrochloric acid followed by a barium chloride solution?
(II)Which two solutions will give a white precipitate when treated with dilute nitric acid followed by silver nitrate solution?
(III)Which solution will give white precipitate, when either dilute hydrochloric acid or dilute sulphuric acid is added to it?
(IV)Which solution becomes a deep/inky blue colour when the excess of ammonium hydroxide is added to it?
(V)Which solution gives a white precipitate with an excess of ammonium hydroxide solution?
The hydroxide soluble in excess of ammonium hydroxide is ______.
Write a balanced equation of a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.
